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Note 8 - Share-based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2021
Notes Tables |
Share-based Payment Arrangement, Option, Activity [Table Text Block] |
|  | Six Months Ended |
|  | June 30, 2021 |
|  | Shares |  |  | Wtd. Avg. Exercise Price |
Outstanding as of beginning of year |  |  | 844,455 |  |  | $ | 2.00 |
Exercised |  |  | (100,269 | ) |  |  | 1.36 |
Forfeited |  |  | (1,146 | ) |  |  | 5.69 |
Expired |  |  | (35,714 | ) |  |  | 1.73 |
Outstanding as of June 30, 2021 |  |  | 707,326 |  |  | $ | 2.09 |
Stock options exercisable as of June 30, 2021 |  |  | 703,787 |  |  | $ | 2.09 |
|  | Six Months Ended |
|  | June 30, 2021 |
|  | Shares |  |  | Wtd. Avg. Exercise Price |
Outstanding as of beginning of year |  |  | 686,001 |  |  | $ | 1.64 |
Exercised |  |  | (287,490 | ) |  |  | 1.64 |
Outstanding as of June 30, 2021 |  |  | 398,511 |  |  | $ | 1.64 |
Stock options exercisable as of June 30, 2021 |  |  | 398,511 |  |  |  | 1.64 |
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] |
|  | Six Months Ended |
|  | June 30, 2021 |
|  | Shares |  |  | Wtd. Avg. Grant Date Fair Value |
Outstanding as of beginning of year |  |  | 930,854 |  |  | $ | 19.31 |
Granted |  |  | 122,166 |  |  |  | 37.98 |
Vested |  |  | (133,527 | ) |  |  | 12.28 |
Forfeited |  |  | (31,199 | ) |  |  | 20.44 |
Non-vested as of June 30, 2021 |  |  | 888,294 |  |  | $ | 22.90 |
|  | Six Months Ended |
|  | June 30, 2021 |
|  | Shares |  |  | Wtd. Avg. Grant Date Fair Value |
Outstanding as of beginning of year |  |  | 224,774 |  |  | $ | 19.20 |
Granted |  |  | 152,665 |  |  |  | 30.85 |
Vested |  |  | (231,268 | ) |  |  | 26.98 |
Non-vested as of June 30, 2021 |  |  | 146,171 |  |  | $ | 20.78 |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] |
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
Research and development costs |  | $ | 437 |  |  | $ | 222 |  |  | $ | 620 |  |  | $ | 397 |
Sales and marketing costs |  |  | 269 |  |  |  | 96 |  |  |  | 453 |  |  |  | 325 |
General and administrative costs |  |  | 1,667 |  |  |  | 699 |  |  |  | 2,646 |  |  |  | 1,275 |
Cost of revenue |  |  | 147 |  |  |  | 128 |  |  |  | 305 |  |  |  | 261 |
Total |  | $ | 2,520 |  |  | $ | 1,145 |  |  | $ | 4,024 |  |  | $ | 2,258 |

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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